A switch cabinet for substation

Abstract

The present application relates to the technical field of high-voltage power distribution, and in particular to a switch cabinet for a substation, which includes a cable laying device arranged in a cable trench and located below the switch cabinet, the cable laying device includes a fixing frame arranged in the cable trench and a guide assembly arranged on the fixing frame and used to change the direction of the cable, the cable passes through the middle of the fixing frame, the guide assembly includes a first guide member arranged on the fixing frame and located at the cable entry end and a second guide member arranged on the fixing frame and located at the cable exit end, and the cable is bent through the first guide member and the second guide member. The present application has the effect of improving the efficiency of laying cables.

Description

Technical Field

[0001] The present application relates to the technical field of high voltage power distribution, and in particular to a switch cabinet for a substation. Background Art

[0002] A low-voltage substation is a commonly used substation mechanism. It generally uses a three-phase power transformer to achieve low-voltage conversion. It includes an above-ground part and an underground part. The above-ground part includes a basic building. Dozens or even hundreds of switch cabinets are installed in the building. The switch cabinet is equipped with a wiring port for plugging in cables. The switch cabinet is an electrical device. The external line of the switch cabinet first enters the main control switch in the cabinet, and then enters the sub-control switch. Each branch is set according to its needs, such as instruments, automatic control, motor magnetic switches, various AC contactors, etc. Some also have high-voltage and low-voltage room switch cabinets, high-voltage busbars, such as power plants, etc. Some are also equipped with low-frequency load shedding to protect the main equipment. The underground part of the substation is installed below the ground below the above-ground part. The underground part is equipped with a truss, which is built as a whole including a crossbeam and a longitudinal beam. The cables inserted into the wiring port in each switch cabinet extend longitudinally and pass through the switch cabinets below the same group in sequence to the underground part.

[0003] The main function of the switchgear is to open and close, control and protect electrical equipment in the process of power generation, transmission, distribution and power conversion in the power system. The components in the switchgear mainly include circuit breakers, disconnectors, load switches, operating mechanisms, transformers and various protective devices. There are many ways to classify switchgear. For example, according to the installation method of the circuit breaker, it can be divided into removable switchgear and fixed switchgear; or according to the different cabinet structures, it can be divided into open switchgear, metal-enclosed switchgear, and metal-enclosed armored switchgear; according to the different voltage levels, it can be divided into high-voltage switchgear, medium-voltage switchgear and low-voltage switchgear. It is mainly suitable for various occasions such as power plants, substations, petrochemicals, metallurgical steel rolling, light industry and textiles, factories and mines, residential areas, high-rise buildings, etc.

[0004] When wiring the substation switch cabinet, the cables need to be gathered in the cable trench and introduced into the corresponding switch cabinets through the threading pipes. The existing threading pipes need to be pre-buried in advance, the construction period is relatively long, and it is not conducive to construction. Utility Model Content

[0005] In order to improve the efficiency of laying cables in a switch cabinet, the present application provides a switch cabinet for a substation.

[0006] The present application provides a switch cabinet for a substation, which adopts the following technical solution:

[0007] A switch cabinet for a substation includes a wire laying device arranged in a cable trench and located below the switch cabinet, the wire laying device includes a fixing frame arranged in the cable trench and a guide assembly arranged on the fixing frame and used to change the direction of the cable, the cable passes through the middle of the fixing frame, the guide assembly includes a first guide member arranged on the fixing frame and located at the cable entry end and a second guide member arranged on the fixing frame and located at the cable exit end, and the cable is bent through the first guide member and the second guide member.

[0008] By adopting the above technical solution, due to the large diameter of the cable, it is not convenient to manually bend it during the laying process, and it is not convenient to lay the cable when passing through the pre-buried pipe, and the pre-buried pipe also needs to be constructed in advance, thereby lengthening the construction period; when laying the cable, the cable can be passed through the fixed frame, and the cable can be bent by the first guide member and the second guide member arranged on the fixed frame, so that it can be laid along the set direction, and the bent part of the cable is fixed on the fixed frame to prevent it from affecting other cables.

[0009] Optionally, the first guide member includes a first guide wheel rotatably disposed at the end of the fixed frame, and the second guide member includes a second guide wheel rotatably disposed at the end of the fixed frame, and the cable contacts the first guide wheel and the second guide wheel respectively and bends toward the corresponding guide wheels.

[0010] By adopting the above technical solution, when the cable is passed through the inside of the fixing frame, the cable first passes through the first guide wheel and is bent by the first guide wheel, so that the cable changes from a horizontal direction to a vertical direction. When the cable needs to pass through the inside of the fixing frame, the cable is bent around the second guide wheel and bent in the direction in which it needs to be laid. The direction of the cable is changed twice by the two guide wheels, so that the cable can be neatly laid in the cable trench, and the first guide wheel can make the cable bend and deform into an arc to avoid excessive bending angles and damage to the cable.

[0011] Optionally, the first guide member also includes a first sliding block slidably set at the end of the fixed frame, and the first guide wheel is rotatably set on the first sliding block. The second guide member also includes a second sliding block slidably set at the end of the fixed frame, and the second guide wheel is rotatably set on the second sliding block. The first sliding block and the second sliding block rotate on the fixed frame around the same axis.

[0012] By adopting the above technical solution, during the cable bending process, the first sliding block and the second sliding block can enable the first guide wheel and the second guide wheel to rotate at the upper and lower ends of the fixing frame, and the first guide wheel and the second guide wheel rotate around the coaxial line, so that the cable can be bent in any direction, and the cable before passing through the fixing frame and the cable after passing through can be set at any angle, so that the cable can be better laid in the cable trench.

[0013] Optionally, a pre-fixed part is arranged inside the fixing frame, and the pre-fixed part includes a fixing ring arranged inside the fixing frame and a plurality of fixing rods fixed on the fixing ring. The fixing ring and the fixing frame are arranged coaxially, and one end of the fixing rod away from the fixing ring is fixed to the fixing frame, and the inside of the fixing ring is for cables to pass through.

[0014] By adopting the above technical solution, the pre-fixed parts can initially fix the cables inserted into the fixing frame, making it convenient to bend the cables at the upper and lower ends of the fixing frame.

[0015] Optionally, the pre-fixing members are arranged in a plurality of groups inside the fixing frame and are evenly distributed inside the fixing frame, and the cables pass through the fixing rings on the plurality of groups of pre-fixing members at the same time.

[0016] By adopting the above technical solution, the multiple groups of pre-fixing parts can fix the cables more firmly.

[0017] Optionally, a fixing component for fixing the cable is provided inside the fixing frame, and the fixing component includes a fixing block horizontally slidably arranged inside the fixing frame, a fixing wheel rotatably arranged on the fixing block, and a fixing piece provided on the fixing frame and connected to the fixing block, the fixing wheel presses against the cable, and the fixing piece controls the fixing block and the fixing wheel to slide toward the cable and fix the cable.

[0018] By adopting the above technical solution, when fixing the cable, the fixing member can control the fixing block to move toward the cable and make the fixing wheel press against the cable, thereby fixing the cable.

[0019] Optionally, the fixing member includes a fixing rod horizontally inserted into the fixing frame, one end of the fixing rod extends into the fixing frame and is fixed to the fixing block, the other end extends outward and is fixed with an anti-slip block, and a fixing spring is sleeved on the fixing rod, one end of the fixing spring is connected to the fixing block, and the other end is connected to the fixing frame.

[0020] By adopting the above technical solution, when fixing the cable, the fixing spring can move toward the cable against the fixing block and press the fixing wheel onto the cable.

[0021] Optionally, a plurality of fixing components are arranged inside the fixing frame, and the plurality of fixing components are evenly distributed along the circumference of the axis of the fixing frame, and the plurality of fixing components clamp and fix the cables simultaneously.

[0022] By adopting the above technical solution, the multiple groups of fixing components arranged inside the fixing frame can make the cables more firmly fixed inside the fixing frame.

[0023] Optionally, a bending assembly is provided on the fixed frame and near the end where the cable passes through, and the bending assembly includes a bending frame rotatably provided on the second sliding block, a bending wheel rotatably provided on the bending frame, the cable passes between the bending wheel and the second guide wheel, and the bending wheel can press the cable.

[0024] By adopting the above technical solution, when it is necessary to bend the cables passing through the fixed frame, the bending frame is controlled to rotate, and the bending wheel is allowed to press the cables. Through the rotation angle of the bending frame, the bending wheel gradually bends and deforms the cables, and the cables are bent in the direction in which they need to be laid, until the cables are bent into place, and then the bending frame is controlled to return to its original state.

[0025] In summary, the present application includes at least one of the following beneficial technical effects:

[0026] 1. When laying cables and connecting them to the switch cabinet, a movable fixing frame can be placed in the cable trench to fix the cables on the fixing frame. The fixing frame can also be used to change the direction of the cables so that they can be neatly laid in the cable trench, thus avoiding the need to pre-bury pipelines in advance, improving construction efficiency, and shortening the construction period.

[0027] 2. During the cable laying process, the cables can be laid in any direction through the cable laying device, making the cable direction more flexible and able to adapt to more complex construction environments. The laid cables are more tidy and avoid disorderly stacking of cables. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0029] Figure 2 It is a schematic diagram of a pre-fixing member according to an embodiment of the present application.

[0030] Figure 3 It is a schematic diagram of a fixing component according to an embodiment of the present application.

[0031] Explanation of the accompanying drawings: 1. fixed frame; 11. supporting leg; 12. guide groove; 2. first guide member; 21. first sliding block; 22. first guide wheel; 3. second guide member; 31. second sliding block; 311. slide groove; 32. second guide wheel; 4. pre-fixing member; 41. fixing ring; 42. pre-fixing rod; 5. fixing assembly; 51. fixing block; 52. fixing wheel; 53. fixing rod; 54. anti-slip block; 55. fixing spring; 6. bending assembly; 61. bending frame; 62. bending wheel; 63. bending handle; 7. reinforcement member; 71. reinforcement slider; 72. reinforcement rod. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-3 This application is described in further detail.

[0033] An embodiment of the present application discloses a switch cabinet for a substation.

[0034] A plurality of switch cabinets are arranged in the substation, and the plurality of switch cabinets are interconnected. The switch cabinets can convert the high voltage input from the outside of the substation into a low voltage through a three-phase power transformer. In the embodiment of the present application, the models of the switch cabinets used are: 11kV switch cabinet, 630A, 20kA, load switch; a cable trench is arranged under the substation. During the cable laying process, the staff lays the cables in the cable trench, and separates and connects the cables to the corresponding switch cabinets in the cable trench. To ensure that the cables are not affected by each other, and the cables have a large diameter, the cables need to be neatly fixed in the cable trench.

[0035] Reference Figure 1 and Figure 2 A switch cabinet for a substation includes a laying device arranged in a cable trench and below the switch cabinet. The cables are neatly laid in the cable trench by the laying device. The laying device includes a fixing frame 1 vertically arranged in the cable trench. The fixing frame 1 is a cylindrical frame structure. A supporting leg 11 is fixed at the lower end of the fixing frame 1. When in use, the fixing frame 1 can be placed in the cable trench according to actual needs to lay the cables. When laying the cables, the cables extend from the lower end of the fixing frame 1 into the fixing frame 1 and pass through the upper end of the fixing frame 1. The cables are laid by changing the direction of the cables. After the laying is completed, the fixing frame 1 is removed. The fixing frame 1 can also be fixed in the cable trench by the supporting legs 11. After the laying is completed, the fixing frame 1 is not removed. A laying device is required to be provided on each cable to be laid, so that the cables are laid in the cable trench below the switch cabinet.

[0036] Reference Figure 2 and Figure 3A guide assembly for laying cables is arranged on the fixed frame 1, and the guide assembly includes a first guide member 2 arranged at the lower end of the fixed frame 1 and a second guide member 3 arranged at the upper end of the fixed frame 1. The first guide member 2 can bend and guide the cables that penetrate into the fixed frame 1, so that the cables can be bent at a certain angle from the cable trench and extend into the fixed frame 1. The second guide member 3 can perform secondary guidance on the cables that pass through the fixed frame 1, so that the cables can be laid along a fixed direction; the first guide member 2 includes a first sliding block 21 that is slidably arranged at the lower end of the fixed frame 1 and a first guide wheel 22 that is rotatably arranged on the first sliding block 21. The first sliding block 21 slides along the annular direction of the fixed frame 1, and the first sliding block 21 is arranged inside the fixed frame 1. An annular guide groove 12 is opened on the inner side of the end of the fixed frame 1, and the end of the first sliding block 21 is slidably fitted in the guide groove 12. When laying cables, the cables The first guide wheel 22 is a first guide wheel which is a second ...

[0037] Reference Figure 2 and Figure 3 A pre-fixing member 4 for pre-fixing the cable is arranged inside the fixing frame 1, and the pre-fixing member 4 includes a fixing ring 41 arranged inside the fixing frame 1 and a plurality of pre-fixing rods 42 fixed on the fixing ring 41. The fixing ring 41 is arranged coaxially with the fixing frame 1, and the plurality of pre-fixing rods 42 are arranged between the fixing ring 41 and the fixing frame 1, and the plurality of pre-fixing rods 42 are evenly distributed along the circumference of the fixing ring 41, and one end of the pre-fixing rod 42 is fixed to the fixing ring 41, and the other end is fixed to the fixing frame 1; a plurality of groups of pre-fixing members 4 are arranged inside the fixing ring 41, and the plurality of groups of pre-fixing members 4 are evenly arranged along the height direction of the fixing frame 1. When the cable is passed through, the cable enters the fixing frame 1 from the lower end of the fixing frame 1, and passes through the plurality of fixing rings 41 in sequence, and finally passes through the upper end of the fixing frame 1. Through the pre-fixing member 4, the cable passed through the fixing frame 1 can be initially fixed, so that the cable can be conveniently bent at the upper and lower ends of the fixing frame 1.

[0038] A fixing assembly 5 for fixing the cable is arranged inside the fixing frame 1, and the fixing assembly 5 includes a fixing block 51 which is horizontally slidably arranged inside the fixing frame 1, and a fixing wheel 52 is rotatably connected to the fixing block 51, and the fixing wheel 52 can be pressed against the cable, and a fixing piece is arranged on the fixing frame 1 and located at the position of the fixing block 51, and the fixing piece can control the fixing block 51 to move horizontally inside the fixing frame 1, and make the fixing wheel 52 press against the cable to achieve fixation; the fixing piece includes a fixing rod 53 which is horizontally penetrated on the fixing frame 1, and one end of the fixing rod 53 extends into the fixing frame 1. , the other end extends into the outside of the fixing frame 1, and the fixing rod 53 can slide on the fixing frame 1, the inward end of the fixing rod 53 is fixed to the fixing block 51, and an anti-dropping block 54 is fixed to the outward end of the fixing rod 53 to prevent the fixing rod 53 from sliding and falling off the fixing frame 1. A fixing spring 55 is sleeved on the fixing rod 53 inside the fixing frame 1, one end of the fixing spring 55 is fixed to the fixing block 51, and the other end is fixed to the fixing frame 1. When the cable is fixed, the fixing spring 55 can move toward the cable against the fixing block 51 and press the fixing wheel 52 onto the cable.

[0039] Reference Figure 2 and Figure 3 A plurality of fixing components 5 are arranged inside the fixing frame 1, and the plurality of fixing components 5 are evenly arranged along the circumferential direction of the axis of the fixing frame 1. The cables pass through the plurality of fixing wheels 52, and the plurality of fixing wheels 52 can be pressed onto the cables at the same time, so that the cables are fixed inside the fixing frame 1. In the height direction inside the fixing frame 1, a plurality of fixing components 5 are also arranged, and the cables are fixed inside the fixing frame 1 and near the upper and lower ends, so that the cables are fixed more firmly on the fixing frame 1.

[0040] The second guide wheel 32 is located on the inner side of the bending frame 61, and the bending frame 61 and the second guide wheel 32 rotate on both sides. A bending wheel 62 is rotatably arranged on the bending frame 61, and the bending wheel 62 is located on the bending frame 61 at an end away from the second guide wheel 32, and the cable can pass between the bending wheel 62 and the second guide wheel 32. A bending handle 63 is fixed at the end of the bending frame 61 away from the second guide wheel 32. When it is necessary to bend the cable passing through the fixed frame 1, the handle is held and the bending frame 61 is controlled to rotate, so that the bending wheel 62 presses the cable, and the bending wheel 62 gradually presses and deforms the cable through the rotation angle of the bending frame 61, and the cable is bent in the direction to be laid until the cable is bent in place, and then the bending frame 61 is controlled to return to its original state.

[0041] Reference Figure 2 and Figure 3A reinforcement piece 7 is provided at the upper end of the fixed frame 1. The reinforcement piece 7 includes a pair of reinforcement sliders 71 slidably fitted on the upper end of the fixed frame 1. The two reinforcement sliders 71 are symmetrically arranged on both sides of the bending frame 61, and the two reinforcement sliders 71 are located on the fixed frame 1 on the side opposite to the second sliding block 31. Reinforcement rods 72 are fixed on the two reinforcement sliders 71. The two reinforcement rods 72 are arranged in parallel, and the other ends of the reinforcement rods 72 are fixed to the second sliding block 31. The reinforcement piece 7 is provided to improve the stability of the bending assembly 6 during the bending process, and to prevent the second sliding block 31 from falling off from the upper end of the fixed frame 1 during the bending process.

[0042] The implementation principle of a switch cabinet for a substation in an embodiment of the present application is as follows: when connecting the cable to the switch cabinet, a laying device is installed in the cable trench so that the cable can be inserted into the fixing frame 1 during the laying process, and the cable is initially fixed by the fixing ring 41 on the fixing frame 1, and the cable is clamped and fixed by multiple fixing wheels 52 around the cable through the fixing component 5. In the process of fixing the cable, the cable is bent near the first guide wheel 22. When the cable passes through the upper end of the fixing frame 1, the cable is bent again through the bending component 6, so that the cable can be bent to the direction where it needs to be laid, and finally connected to the electrical device on the switch cabinet.

[0043] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A switch cabinet for a substation, characterized in that: The invention comprises a cable laying device arranged in a cable trench and located below a switch cabinet, the cable laying device comprising a fixing frame (1) arranged in the cable trench and a guide assembly arranged on the fixing frame (1) and used to change the direction of the cable, the cable passes through the middle of the fixing frame (1), the guide assembly comprises a first guide member (2) arranged on the fixing frame (1) and located at the cable entry end and a second guide member (3) arranged on the fixing frame (1) and located at the cable exit end, and the cable is bent through the first guide member (2) and the second guide member (3).

2. A switch cabinet for a substation according to claim 1, characterized in that: The first guide member (2) comprises a first guide wheel (22) rotatably arranged at the end of the fixed frame (1), and the second guide member (3) comprises a second guide wheel (32) rotatably arranged at the end of the fixed frame (1), and the cable contacts the first guide wheel (22) and the second guide wheel (32) respectively and is bent toward the corresponding guide wheel.

3. A switch cabinet for a substation according to claim 2, characterized in that: The first guide member (2) further comprises a first sliding block (21) slidably arranged at the end of the fixed frame (1), and the first guide wheel (22) is rotatably arranged on the first sliding block (21). The second guide member (3) further comprises a second sliding block (31) slidably arranged at the end of the fixed frame (1), and the second guide wheel (32) is rotatably arranged on the second sliding block (31). The first sliding block (21) and the second sliding block (31) rotate on the fixed frame (1) around the same axis.

4. A switch cabinet for a substation according to claim 1, characterized in that: A pre-fixing component (4) is arranged inside the fixing frame (1), and the pre-fixing component (4) comprises a fixing ring (41) arranged inside the fixing frame (1) and a plurality of pre-fixing rods (42) fixed on the fixing ring (41), the fixing ring (41) and the fixing frame (1) are arranged coaxially, one end of the pre-fixing rod (42) away from the fixing ring (41) is fixed to the fixing frame (1), and the fixing ring (41) is provided inside for cables to pass through.

5. A switch cabinet for a substation according to claim 4, characterized in that: The pre-fixing members (4) are arranged in multiple groups inside the fixing frame (1) and are evenly distributed inside the fixing frame (1), and the cables pass through the fixing rings (41) on the multiple groups of pre-fixing members (4) at the same time.

6. A switch cabinet for a substation according to claim 1, characterized in that: A fixing assembly (5) for fixing the cable is arranged inside the fixing frame (1), and the fixing assembly (5) comprises a fixing block (51) arranged horizontally and slidably inside the fixing frame (1), a fixing wheel (52) rotatably arranged on the fixing block (51), and a fixing member arranged on the fixing frame (1) and connected to the fixing block (51), the fixing wheel (52) being pressed against the cable, and the fixing member controlling the fixing block (51) and the fixing wheel (52) to slide towards the cable and fix the cable.

7. A switch cabinet for a substation according to claim 6, characterized in that: The fixing member comprises a fixing rod (53) horizontally inserted into the fixing frame (1), one end of the fixing rod (53) extends into the fixing frame (1) and is fixed to the fixing block (51), and the other end extends outward and is fixed to an anti-slip block (54), and a fixing spring (55) is sleeved on the fixing rod (53), one end of the fixing spring (55) is connected to the fixing block (51), and the other end is connected to the fixing frame (1).

8. A switch cabinet for a substation according to claim 6, characterized in that: A plurality of fixing components (5) are arranged inside the fixing frame (1), and the plurality of fixing components (5) are evenly distributed along the circumference of the axis of the fixing frame (1), and the plurality of fixing components (5) clamp and fix the cables simultaneously.

9. A switch cabinet for a substation according to claim 1, characterized in that: A bending assembly (6) is arranged on the fixing frame (1) near the end through which the cable passes, and the bending assembly (6) comprises a bending frame (61) rotatably arranged on the second sliding block (31), a bending wheel (62) rotatably arranged on the bending frame (61), the cable passes between the bending wheel (62) and the second guide wheel (32), and the bending wheel (62) can press the cable.

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